Chlorine is a yellow-green gas at room temperature.
No, it is green.
No
Chlorine oxidises Iodide to Iodine, which shows up as blue when complexed with starch.
Chlorine is a poison which in moderated doses is used to treat water for swimming and drinking. It kills many germs which might otherwise make people sick. It also gives the water a blue tint, which is why the water in swimming pools appears to be blue. A glass of chlorinated water held against the light will be blue, while water untreated with chlorine is clear.
Sulphur dioxide is an acid, so it will turn it red, chlorine is also an acid, so it will turn it red, but then bleech it.
Free Chlorine is the Chlorine which is free to do its work in the pool, as opposed to Combined Chlorine which is chlorine that has combined with contaminants and is tied up and ineffective as a sanitizer in the pool. Sometimes you will see it abbreviated as FAC, which stands for Free Available Chlorine.
No
Chlorine oxidises Iodide to Iodine, which shows up as blue when complexed with starch.
Chlorine does not make your pee turn blue it makes you have diaria
Chlorine*
That usually means high chlorine. Try doubling the amount of chlorine neutralizer on a second test.
It should be a greenish blue.
Chlorine is a poison which in moderated doses is used to treat water for swimming and drinking. It kills many germs which might otherwise make people sick. It also gives the water a blue tint, which is why the water in swimming pools appears to be blue. A glass of chlorinated water held against the light will be blue, while water untreated with chlorine is clear.
Chlorine gas
Fireworks are coloured by using various metallic salts, sometimes in conjunction with a chlorine donor (i.e. PVC, Parlon, hexachloroethane). For red Strontium is used (with or without a chlorine donor), for green barium (with a chlorine donor), for yellow sodium (no chlorine donor is needed) and for blue copper (with a chlorine donor..
If test chlorine with a moist blue litmus paper, Turn from blue à red à colourless It is because chlorine reacts with water (moisture on paper) to from HOCl (hypochlorite acid) which is a bleaching agent, turning the dye to colourless Cl2 (aq) + H2O (l) à Hcl (aq) + HOCl (aq) and HOCl à HCl + [O]
blue to brownish black
The gas that turns a universal indicator blue is usually chlorine.